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United StatesThe weather in May in Key West
It's hot in May in Key West with an average temperature of 30°C. Temperatures this month range from a low of 29°C to a high of 31°C. At night, you can expect temperatures between 24°C and 27°C.
May is a good month to be in Key West for sunny weather. You’ll have high temperatures and not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in May for Key West, Florida. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 33°C in 2019, Key West reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 25°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 18°C to a highest value of 29°C.
Water temperature
The water temperature at Key West is 30°C this month. It’s really warm, perfect for a swim.
Rainfall amount
In May, there is an average of 93 mm of precipitation, spread over 13 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
Daily weather in May for Key West
Click on any day in May to get detailed info about the usual weather on that day in Key West. Check out the historical temperatures and precipitation over the past 10 years on this day.
May weather comparison
| Key West | New York | |
|---|---|---|
| Average temperature | 30°C | 22°C |
| Max. temperature | 31°C | 28°C |
| Min. temperature | 24°C | -5°C |
| Total precipitation | 93 mm | 105 mm |
| Rainy days | 13 days | 14 days |
Start of May
The month of May starts in Key West with hot temps, averaging around 30°C during the day and nights around 25°C.
Mid May
By mid-May, daytime temps rise to around 31°C, with nights around 26°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of May
By the end of May, the average daytime temperature in Key West is around 31°C, while nighttime temps are about 27°C. A shower might pop up, but overall, the weather will be dry and sunny.
Find affordable trips to Key West
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
The hurricane season in Key West runs from June to November.
Check out the climate of Key West for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in May in Key West, Florida. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in May in Key West
Temperature in May in Key West over the years
Precipitation charts
These charts show the average amount of precipitation in May in Key West, Florida. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in May in Key West
Total precipitation in May in Key West over the years
Daily UV index in May in Key West
This chart shows the average daily UV index in May in Key West, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in May in Key West
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Average weather in Key West by month
Click on a month below to see detailed weather info for Key West. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.